Experts said it is impossible to know whether the health lift it due to the coffee or other habits that are more common amongst drinkers.

Dr Oyinlola Oyebode, Associate Professor at the University of Warwick, said: “The main conclusions are moderate coffee consumption is not just safe, but more likely to be associated with benefits to health in the majority of adults.

“But there is the possibility that the association with better health is due to something else that coffee drinkers are more likely to do.”